$def with (authors)

$if authors:
    $ author_list = ', '.join('<a class="borrowResults" href="%s">%s</a>' % (a.url(), truncate(a.name, 40)) for a in authors)
    $_("by") <span title="$_('Go to this author\'s page')">$:author_list</span>
$else:
    $:_("by an <em>unknown author</em>")